'use strict';

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (“value” in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(“Cannot call a class as a function”); } }

!function ($) {

/**
 * AccordionMenu module.
 * @module foundation.accordionMenu
 * @requires foundation.util.keyboard
 * @requires foundation.util.motion
 * @requires foundation.util.nest
 */

var AccordionMenu = function () {
  /**
   * Creates a new instance of an accordion menu.
   * @class
   * @fires AccordionMenu#init
   * @param {jQuery} element - jQuery object to make into an accordion menu.
   * @param {Object} options - Overrides to the default plugin settings.
   */
  function AccordionMenu(element, options) {
    _classCallCheck(this, AccordionMenu);

    this.$element = element;
    this.options = $.extend({}, AccordionMenu.defaults, this.$element.data(), options);

    Foundation.Nest.Feather(this.$element, 'accordion');

    this._init();

    Foundation.registerPlugin(this, 'AccordionMenu');
    Foundation.Keyboard.register('AccordionMenu', {
      'ENTER': 'toggle',
      'SPACE': 'toggle',
      'ARROW_RIGHT': 'open',
      'ARROW_UP': 'up',
      'ARROW_DOWN': 'down',
      'ARROW_LEFT': 'close',
      'ESCAPE': 'closeAll'
    });
  }

  /**
   * Initializes the accordion menu by hiding all nested menus.
   * @private
   */

  _createClass(AccordionMenu, [{
    key: '_init',
    value: function _init() {
      this.$element.find('[data-submenu]').not('.is-active').slideUp(0); //.find('a').css('padding-left', '1rem');
      this.$element.attr({
        'role': 'menu',
        'aria-multiselectable': this.options.multiOpen
      });

      this.$menuLinks = this.$element.find('.is-accordion-submenu-parent');
      this.$menuLinks.each(function () {
        var linkId = this.id || Foundation.GetYoDigits(6, 'acc-menu-link'),
            $elem = $(this),
            $sub = $elem.children('[data-submenu]'),
            subId = $sub[0].id || Foundation.GetYoDigits(6, 'acc-menu'),
            isActive = $sub.hasClass('is-active');
        $elem.attr({
          'aria-controls': subId,
          'aria-expanded': isActive,
          'role': 'menuitem',
          'id': linkId
        });
        $sub.attr({
          'aria-labelledby': linkId,
          'aria-hidden': !isActive,
          'role': 'menu',
          'id': subId
        });
      });
      var initPanes = this.$element.find('.is-active');
      if (initPanes.length) {
        var _this = this;
        initPanes.each(function () {
          _this.down($(this));
        });
      }
      this._events();
    }

    /**
     * Adds event handlers for items within the menu.
     * @private
     */

  }, {
    key: '_events',
    value: function _events() {
      var _this = this;

      this.$element.find('li').each(function () {
        var $submenu = $(this).children('[data-submenu]');

        if ($submenu.length) {
          $(this).children('a').off('click.zf.accordionMenu').on('click.zf.accordionMenu', function (e) {
            e.preventDefault();

            _this.toggle($submenu);
          });
        }
      }).on('keydown.zf.accordionmenu', function (e) {
        var $element = $(this),
            $elements = $element.parent('ul').children('li'),
            $prevElement,
            $nextElement,
            $target = $element.children('[data-submenu]');

        $elements.each(function (i) {
          if ($(this).is($element)) {
            $prevElement = $elements.eq(Math.max(0, i - 1)).find('a').first();
            $nextElement = $elements.eq(Math.min(i + 1, $elements.length - 1)).find('a').first();

            if ($(this).children('[data-submenu]:visible').length) {
              // has open sub menu
              $nextElement = $element.find('li:first-child').find('a').first();
            }
            if ($(this).is(':first-child')) {
              // is first element of sub menu
              $prevElement = $element.parents('li').first().find('a').first();
            } else if ($prevElement.parents('li').first().children('[data-submenu]:visible').length) {
              // if previous element has open sub menu
              $prevElement = $prevElement.parents('li').find('li:last-child').find('a').first();
            }
            if ($(this).is(':last-child')) {
              // is last element of sub menu
              $nextElement = $element.parents('li').first().next('li').find('a').first();
            }

            return;
          }
        });

        Foundation.Keyboard.handleKey(e, 'AccordionMenu', {
          open: function () {
            if ($target.is(':hidden')) {
              _this.down($target);
              $target.find('li').first().find('a').first().focus();
            }
          },
          close: function () {
            if ($target.length && !$target.is(':hidden')) {
              // close active sub of this item
              _this.up($target);
            } else if ($element.parent('[data-submenu]').length) {
              // close currently open sub
              _this.up($element.parent('[data-submenu]'));
              $element.parents('li').first().find('a').first().focus();
            }
          },
          up: function () {
            $prevElement.focus();
            return true;
          },
          down: function () {
            $nextElement.focus();
            return true;
          },
          toggle: function () {
            if ($element.children('[data-submenu]').length) {
              _this.toggle($element.children('[data-submenu]'));
            }
          },
          closeAll: function () {
            _this.hideAll();
          },
          handled: function (preventDefault) {
            if (preventDefault) {
              e.preventDefault();
            }
            e.stopImmediatePropagation();
          }
        });
      }); //.attr('tabindex', 0);
    }

    /**
     * Closes all panes of the menu.
     * @function
     */

  }, {
    key: 'hideAll',
    value: function hideAll() {
      this.up(this.$element.find('[data-submenu]'));
    }

    /**
     * Opens all panes of the menu.
     * @function
     */

  }, {
    key: 'showAll',
    value: function showAll() {
      this.down(this.$element.find('[data-submenu]'));
    }

    /**
     * Toggles the open/close state of a submenu.
     * @function
     * @param {jQuery} $target - the submenu to toggle
     */

  }, {
    key: 'toggle',
    value: function toggle($target) {
      if (!$target.is(':animated')) {
        if (!$target.is(':hidden')) {
          this.up($target);
        } else {
          this.down($target);
        }
      }
    }

    /**
     * Opens the sub-menu defined by `$target`.
     * @param {jQuery} $target - Sub-menu to open.
     * @fires AccordionMenu#down
     */

  }, {
    key: 'down',
    value: function down($target) {
      var _this = this;

      if (!this.options.multiOpen) {
        this.up(this.$element.find('.is-active').not($target.parentsUntil(this.$element).add($target)));
      }

      $target.addClass('is-active').attr({ 'aria-hidden': false }).parent('.is-accordion-submenu-parent').attr({ 'aria-expanded': true });

      //Foundation.Move(this.options.slideSpeed, $target, function() {
      $target.slideDown(_this.options.slideSpeed, function () {
        /**
         * Fires when the menu is done opening.
         * @event AccordionMenu#down
         */
        _this.$element.trigger('down.zf.accordionMenu', [$target]);
      });
      //});
    }

    /**
     * Closes the sub-menu defined by `$target`. All sub-menus inside the target will be closed as well.
     * @param {jQuery} $target - Sub-menu to close.
     * @fires AccordionMenu#up
     */

  }, {
    key: 'up',
    value: function up($target) {
      var _this = this;
      //Foundation.Move(this.options.slideSpeed, $target, function(){
      $target.slideUp(_this.options.slideSpeed, function () {
        /**
         * Fires when the menu is done collapsing up.
         * @event AccordionMenu#up
         */
        _this.$element.trigger('up.zf.accordionMenu', [$target]);
      });
      //});

      var $menus = $target.find('[data-submenu]').slideUp(0).addBack().attr('aria-hidden', true);

      $menus.parent('.is-accordion-submenu-parent').attr('aria-expanded', false);
    }

    /**
     * Destroys an instance of accordion menu.
     * @fires AccordionMenu#destroyed
     */

  }, {
    key: 'destroy',
    value: function destroy() {
      this.$element.find('[data-submenu]').slideDown(0).css('display', '');
      this.$element.find('a').off('click.zf.accordionMenu');

      Foundation.Nest.Burn(this.$element, 'accordion');
      Foundation.unregisterPlugin(this);
    }
  }]);

  return AccordionMenu;
}();

AccordionMenu.defaults = {
  /**
   * Amount of time to animate the opening of a submenu in ms.
   * @option
   * @type {number}
   * @default 250
   */
  slideSpeed: 250,
  /**
   * Allow the menu to have multiple open panes.
   * @option
   * @type {boolean}
   * @default true
   */
  multiOpen: true
};

// Window exports
Foundation.plugin(AccordionMenu, 'AccordionMenu');

}(jQuery);